Steric hindrance of growth of filamentous fungi in solid substrate fermentation of wheat straw |
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Authors: | Laukevics J J Apsite A F Viesturs U S Tengerdy R P |
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Institution: | A. Kirchenstein Institute of Microbiology, Academy of Sciences of Latvian SSR, Kleisti, 226067, Riga, Latvian SSR, USSR. |
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Abstract: | Cellulolytic fungi, such as Trichoderma reesei, T. lignorum, and Chaetomium cellulolyticum reach a low packing density of mycelia when grown on straw under conditions of solid substrate fermentation. The low packing density is shown to be caused partially by the geometric limitation of the growth of mycelia in the substrate and particularly in its pores, but the exact contribution of this limitation and other limitations such as mass transfer and substrate availability cannot be easily distinguished. The combined effect of such limitations is called steric hindrance. This steric hindrance is associated with and may be the principal cause of low biomass concentration in SSF. |
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